1) Cretaceous ammonite
Found on
https://www.crosswordclues.com/clue/olcostephanus
Olcostephanus is an extinct ammonoid cephalopod genus belonging to the family Olcostephanidae. These fast-moving nektonic carnivores lived during the Cretaceous, from the upper Valanginian to the lower Hauterivian age. Fossils of species within this genus have been found in the Cretaceous sediments of Antarctica, Argentina, Austria, Chile, Colombi...
Found on
http://en.wikipedia.org/wiki/Olcostephanus
No exact match found.
